One of the best selling speakers of all time it has a wide frequency range and excellent sensitivity emphasis is on huge bass relaxed mids and vibrant highs which make for a brutal sound solid and fat with plenty of sparkle dimensions mm 127x309 weight kg 3 5 connectors spade resonant frequency hz 85 magnet weight oz 35 0 99 kg impedance ohms 16 coil size mm 44 5 sensitivity db 97 power rms w 75 frequency response hz 80 to 5000 diameter mm 305